It was studied the distribution of bubbles in sea water theoretically and experimentally, with simultaneous measurements of acoustic nonlinearity and cavitation strength. The studies were conducted in the offshore area of the Sea of Japan with different hydrological and meteorological characteristics. It is shown that the acoustic nonlinearity and cavitation strength of the water containing bubbles in large enough concentrations, exhibit abnormal characteristics that sharply distinguish them from those observed in pure sea water.
43.25.+y Nonlinear acoustics
43.30.-k Underwater sound
43.30.+m Underwater sound
$^1$V.I.Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
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